Who are the bigs?

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Across
  1. 2. do you like green eggs and ham?
  2. 4. Gossip,The Meeting,The Promotion,Niagara,Niagara (2),Mafia,The Lover,Koi Pond,Double Date
  3. 5. Very musically talented with T-Rex arms.
Down
  1. 1. Ingeniero Cómico
  2. 3. communicate communicate communicate
  3. 4. Stem girl swag